<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>后盾人</title>
  </head>
  <body></body>
  <script>
    //Object.prototyope = b.__proto__
    let a = {};
    let b = {};
    let c = {};
    Object.setPrototypeOf(b, c);
    Object.setPrototypeOf(a, b);
    // console.log(Object.prototype == b.__proto__);
    // console.log(b.__proto__.isPrototypeOf(a));
    console.log(b.isPrototypeOf(a));
    console.log(c.isPrototypeOf(b));
    console.log(c.isPrototypeOf(a));
  </script>
</html>
